package br.uece.paa.sa.jssp.ui;

import java.io.File;

import javax.swing.filechooser.FileFilter;

public class JsspFileFilter extends FileFilter {

	@Override
	public boolean accept(File f) {
		if (f.isDirectory()) {
            return true;
        }

        String extension = getExtension(f);
        if (extension != null) {
            if (extension.equals("txt")) {
                    return true;
            } else {
                return false;
            }
        }

        return false;

	}
	
    /*
     * Get the extension of a file.
     */
    public static String getExtension(File f) {
        String ext = null;
        String s = f.getName();
        int i = s.lastIndexOf('.');

        if (i > 0 &&  i < s.length() - 1) {
            ext = s.substring(i+1).toLowerCase();
        }
        return ext;
    }


	@Override
	public String getDescription() {
		
		return "Arquivos de instância";
	}

}
